给下列句子选择合适的答语。

① How do you like this chess? ____     A. It's$50.

② How much is this sweater?____     B. Yes How much is it?

③ The socks are $50.  ____     C. It's very pretty.

④ Can l help you? ____     D. They're too expensive.

说出下列句子的修辞手法

春风像个慈祥的母亲,拂着你的脸颊,使你感到舒畅,心旷神怡。

降低癌症发病率的主要措施是（    ）